Flora of North America species comparison

erect or decumbent, slender, wiry, usually well-branched, 5–25(–50) cm.

usually erect, sometimes decumbent, slender, wiry, usually many-branched, to 30 cm.

proximalmost not clustered near base;

blade linear to narrowly elliptic or narrowly oblanceolate, 0.5–2.5(–3) × 0.1–0.15(–0.5) cm, base attenuate, margins sparsely serrulate to coarsely serrate, apex acuminate.

proximalmost not clustered near base;

blade linear, 1–3 × 0.1–0.3 cm, base cuneate or attenuate, margins usually entire, rarely with 1 or 2 small teeth, apex acute.

opening near sunrise;

floral tube 1.5–5.5 mm, ± densely villous on proximal 1/2 inside;

sepals 3.5–8(–12) mm, reflexed in pairs;

petals (3.5–)5–15.5 mm, each usually with 1 or 2 red dots basally; episepalous filaments (1.4–)2.1–5.5 mm, epipetalous filaments (0.7–)1.2–3.2 mm, anthers 1–2.4 mm, pollen with less than 5% of grains 4- or 5-pored;

style (3.2–)4–12(–15) mm, stigma well exserted beyond anthers at anthesis.

opening near sunrise;

floral tube 1.5–2.5 mm, moderately to sparsely pubescent inside on proximal 1/2;

sepals 1.6–4 mm, reflexed in pairs;

petals 2–4.2 mm, each ± with 2 red dots basally; episepalous filaments 0.9–2.1 mm, epipetalous filaments 0.5–1.4 mm, anthers 0.3–0.6 mm, pollen with usually less than 10% of grains 4-pored;

style 2.3–4.8 mm, stigma surrounded by anthers at anthesis.

20–43 × 0.7–1.5(–2) mm;

subsessile.

45–60 × 0.8–1.3 mm;

subsessile.

0.8–1.6 × 0.4–0.6 mm.

1–2 × 0.4–0.5 mm.

= 28.